Shortly after the de facto secession of the Gallic Empire from the Roman Empire, Gallic Emperor Postumus set up a new Senate in Colonia Agrippina. At first, the Gallic Senate was identical to its Roman counterpart. During the 270s, Postumus began to believe that in order to maintain political stability in his empire, it was necessary for him and his successors to deal with the Senate as an equal, rather than make it a puppet. In accordance with this view, Postumus gave the Senate the power to depose and replace the emperor, choose the emperor's successor in the event of the emperor dying or abdicating without choosing his own successor, and the power to appoint the majority of the provincial governors.